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本文利用荧光光谱和园二色光谱了新开花粉蛋白的盐酸胍去折叠过程。结果显示:新开花粉蛋白的盐酸胍去折叠是一个只包含天然蛋白和变性终态的二态过程,与已经报道的天花粉蛋白的盐酸胍去折叠的过程不同。 相似文献
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Review of nanofluids for heat transfer applications 总被引:2,自引:0,他引:2
Saeid Vafaei 《中国颗粒学报》2009,7(2)
Research on nanofluids has progressed rapidly since its enhanced thermal conductivity was first repotted about a decade ago,though much controversy and inconsistency have been reported,and insufficient understanding of the formulation and mechanism of nanofluids further limits their applications.This work presents a critical review of research on heat transfer applications of nanofluids with the aim of identifying the limiting factors so as to push forward their further development. 相似文献
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Vijay NS Bhagawati-Prasad Evy De Leenheer Nadine P Keefe Lorna A Ryan Jennifer Carlring Andrew W Heath 《Journal of immune based therapies and vaccines》2010,8(1):1
Active vaccination can be effective as a post-exposure prophylaxis, but the rapidity of the immune response induced, relative
to the incubation time of the pathogen, is critical. We show here that CD40mAb conjugated to antigen induces a more rapid
specific antibody response than currently used immunological adjuvants, alum and monophosphoryl lipid A™. 相似文献
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Arun Kumar NS Prashanth Shivappa Adarakatti Ashoka S Pandurangappa Malingappa 《Journal of Solid State Electrochemistry》2018,22(6):1711-1719
A simple strategy has been proposed to quantify Zn2+ ions using CeO2 nanoparticle-modified glassy carbon electrode. The CeO2 nanoparticles were prepared by sucrose-nitrate decomposition method, and it was characterized by X-ray diffraction (XRD), FT-IR, TEM, and surface area analyzer. The synthesized CeO2 nanoparticles were used as modifier molecules as a thin film on glassy carbon electrode (GCE) in the trace level quantification of Zn2+ by using cyclic voltammetry (CV) and differential pulse anodic stripping voltammetry (DPASV) techniques. The fabricated sensor exhibited a good analytical response towards Zn2+ ions. The modified electrode showed a wide linearity in the concentration range 20–380 μg L?1 with a limit of detection 0.36 μg L?1. The proposed electrochemical sensor was successfully applied to trace level Zn2+ quantification from real sample matrices. 相似文献
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FTIR光谱法研究天花粉蛋白的热去折叠过程 总被引:4,自引:0,他引:4
本文利用FTIR光谱技术和计算机辅助解析技术(二阶导数、去卷积和曲线拟合)研究了天花粉蛋白的热诱导去折叠过程。结果表明:在25~85℃温度范围内,天花粉蛋白的热去折叠是一个不可逆的分子间聚集的过程;二级结构随温度的变化暗示了折叠中间体的存在。 相似文献
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Phala NS Klatt G van Steen E French SA Sokol AA Catlow CR 《Physical chemistry chemical physics : PCCP》2005,7(12):2440-2445
The interaction between gold in the 0, i, ii and iii oxidation states and the zinc-terminated ZnO(0001) surface is studied via the QM/MM electronic embedding method using density functional theory. The surface sites considered are the vacant zinc interstitial surface site (VZISS) and the bulk-terminated island site (BTIS). We find that on the VZISS, only Au(0) and Au(i) are stable oxidation states. However, all clusters of i to iii oxidation states are stable as substitutionals for Zn2+ in the bulk terminated island site. Au(OH)(x) complexes (x= 1-3) can adsorb exothermically onto the VZISS, indicating that higher oxidation states of gold can be stabilised at this site in the presence of hydroxyl groups. CO is used as a probe molecule to study the reactivity of Au in different oxidation states in VZISS and BTIS. In all cases, we find that the strongest binding of CO is to surface Au(i). Furthermore, CO binding onto Au(0) is stronger when the gold atom is adsorbed onto the VZISS compared to CO binding onto a gas phase neutral gold atom. These results indicate that the nature of the oxidation states of Au on ZnO(0001) will depend on the type of adsorption site. The role of ZnO in Au/ZnO catalysts is not, therefore, merely to disperse gold atoms/particles, but to also modify their electronic properties. 相似文献
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